Security Bulletin
Summary
A Samba vulnerability affects IBM Spectrum Scale SMB protocol access method that could cause denial of service. A fix for this vulnerability is available.
Vulnerability Details
DESCRIPTION: Samba is vulnerable to a denial of service, caused by an error after a failed character conversion at log level 3 or above. By sending a specially crafted string during the NTLMSSP authentication exchange, an attacker could exploit this vulnerability to cause a long-lived process to terminate.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/174912 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| IBM Spectrum Scale | All |
Remediation/Fixes
For IBM Spectrum Scale V4.2.0.0 through V4.2.3.19, apply V4.2.3.20 available from FixCentral at:
https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=Software%20defined%20storage&product=ibm/StorageSoftware/IBM+Spectrum+Scale&release=4.2.3&platform=All&function=all
- For IBM Spectrum Scale V5.0.0.0 through V5.0.4.2, reference APAR IJ23359
- For IBM Spectrum Scale V4.2.0.0 through V4.2.3.19, reference APAR IJ23358
Workarounds and Mitigations
Get Notified about Future Security Bulletins
References
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
Disclaimer
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
Document Location
Worldwide
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Document Information
Modified date:
06 March 2020
UID
ibm15693486